Plant DetailShow Menu

Willow Oak Quercus phellos

Phonetic Spelling
KWER-kus FEL-ohs
This plant has low severity poison characteristics.
See below
Description

Willow Oak is a deciduous tree in the beech family that is native to eastern and central USA. It may grow 50 to 80 feet tall but can reach up to 100 feet tall and is long-lived. In NC it can be found in all areas of the state. It has a nice balanced rounded form that has made it a popular tree in the southeast USA.  Willow Oak is fast-growing for an oak and starts producing acorns at age 15-20 years. This tree is a high-value wildlife tree for birds and mammals.

Willow Oak is easy to grow in acidic, average, medium to wet, well-drained soils in full sun to light shade. It is adaptable to a variety of soil types. It is utilized as a shade tree in commercial establishments, parks, golf courses, large yards and as a street tree. 

Fairly disease and pest resistant. Root rot, borers, trunk canker and orange-striped oakworm are potential problems. Chlorosis due to iron-deficiency occurs on high pH soil.

Quick ID Hints:

  • Leaves willow-like with bristle tip
  • Leaf pubescence below in axillary tufts of hairs
Cultivars / Varieties:
  • 'High Tower'
Tags:
#deciduous#fall color#shade tree#rain garden#heat tolerant#wildlife plant#native tree#salt tolerant#cover plant#low maintenance#ducks#air pollution tolerant#street tree#playground#standing water#wet sites#pond margins#small mammals#food source#highly beneficial coastal plants#cpp#NC native#black bears#wild turkeys#deer resistant#woodpeckers#acorns#quail#children's garden#fire resistant#edible fruits#Braham Arboretum#larval host plant#food source fall#food source herbage#Piedmont Mountains FAC#Coastal FACW#bird friendly#food source hard mast fruit#mammals#butterfly friendly#birds#butterfly larvae#larval host tree
 
Cultivars / Varieties:
  • 'High Tower'
Tags:
#deciduous#fall color#shade tree#rain garden#heat tolerant#wildlife plant#native tree#salt tolerant#cover plant#low maintenance#ducks#air pollution tolerant#street tree#playground#standing water#wet sites#pond margins#small mammals#food source#highly beneficial coastal plants#cpp#NC native#black bears#wild turkeys#deer resistant#woodpeckers#acorns#quail#children's garden#fire resistant#edible fruits#Braham Arboretum#larval host plant#food source fall#food source herbage#Piedmont Mountains FAC#Coastal FACW#bird friendly#food source hard mast fruit#mammals#butterfly friendly#birds#butterfly larvae#larval host tree
  • Attributes:
    Genus:
    Quercus
    Species:
    phellos
    Family:
    Fagaceae
    Life Cycle:
    Perennial
    Woody
    Recommended Propagation Strategy:
    Seed
    Country Or Region Of Origin:
    Central & Eastern U.S.A
    Distribution:
    AL , AR , CT , DC , DE , FL , GA , IL , KY , LA , MD , MO , MS , NC , NJ , NY , OK , PA , SC , TN , TX , VA. Found in all southeastern states; starting from eastern Texas towards the east coast, south to northern Florida and stopping northward at southern New Jersey.
    Fire Risk Rating:
    medium flammability
    Wildlife Value:
    It is a host plant for the Banded Hairstreak, Edward's Hairstreak, Gray Hairstreak, White-M Hairstreak, Horace's Duskywing, Juvenal's Duskywing butterflies and many moths. Its acorns are eaten by woodpeckers, songbirds, ducks, small mammals, wild turkeys, white-tailed deer, quail and black bears.
    Play Value:
    Edible fruit
    Wildlife Cover/Habitat
    Wildlife Food Source
    Wildlife Larval Host
    Wildlife Nesting
    Edibility:
    Acorns (nuts) are edible after tannins are leached or boiled out.
    Dimensions:
    Height: 50 ft. 0 in. - 80 ft. 0 in.
    Width: 30 ft. 0 in. - 40 ft. 0 in.
  • Whole Plant Traits:
    Plant Type:
    Native Plant
    Poisonous
    Tree
    Woody Plant Leaf Characteristics:
    Deciduous
    Habit/Form:
    Oval
    Rounded
    Growth Rate:
    Rapid
    Maintenance:
    Low
    Texture:
    Fine
  • Cultural Conditions:
    Light:
    Full sun (6 or more hours of direct sunlight a day)
    Partial Shade (Direct sunlight only part of the day, 2-6 hours)
    Soil Texture:
    Clay
    Loam (Silt)
    Sand
    Soil pH:
    Acid (<6.0)
    Neutral (6.0-8.0)
    Soil Drainage:
    Good Drainage
    Moist
    Occasionally Dry
    Occasionally Wet
    Available Space To Plant:
    more than 60 feet
    NC Region:
    Coastal
    Piedmont
    USDA Plant Hardiness Zone:
    5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
  • Fruit:
    Fruit Color:
    Brown/Copper
    Fruit Value To Gardener:
    Edible
    Display/Harvest Time:
    Fall
    Fruit Type:
    Nut
    Fruit Length:
    < 1 inch
    Fruit Width:
    < 1 inch
    Fruit Description:
    The 1/2 inch long rounded fruits are acorns with a bowl-like cap that is striated with brown and black bands. Acorns are come singly or in pairs. Involucral bracts in a shallow cup, imbricated. Displays from September to November.
  • Flowers:
    Flower Color:
    Brown/Copper
    Gold/Yellow
    Green
    Flower Inflorescence:
    Catkin
    Insignificant
    Flower Bloom Time:
    Spring
    Flower Description:
    Yellowish-green male flowers as long pendulous catkins. Female flowers in short spikes. Blooms from March to April.
  • Leaves:
    Woody Plant Leaf Characteristics:
    Deciduous
    Leaf Color:
    Brown/Copper
    Gold/Yellow
    Green
    Leaf Feel:
    Smooth
    Deciduous Leaf Fall Color:
    Brown/Copper
    Gold/Yellow
    Leaf Type:
    Simple
    Leaf Arrangement:
    Alternate
    Leaf Shape:
    Lanceolate
    Leaf Margin:
    Entire
    Hairs Present:
    No
    Leaf Length:
    3-6 inches
    Leaf Width:
    < 1 inch
    Leaf Description:
    4-5 inch long green leaves are 1 inch wide and willow-like. Bristle tipped at the apex. Fall color is non-showy yellow-brown to red-brown. Leaves are simple, alternate, slender, smooth-edged and light green and shiny above while paler below with visible venation. Leaves are alternate, simple, oblong-lanceolate, acute and bristle tipped, rotund to subcuneate, entire, lower surface with conspicuous midrib and inconspicuous lateral veins with axillary tufts of hairs.
  • Bark:
    Bark Color:
    Dark Brown
    Dark Gray
    Surface/Attachment:
    Ridges
    Bark Description:
    The bark is gray-brown with shallow ridges and furrows. Bark is rough and divided into narrow ridges as the tree ages.
  • Stem:
    Stem Color:
    Gray/Silver
    Stem Is Aromatic:
    No
    Stem Buds:
    Smooth/Hairless
    Stem Bud Terminal:
    Cluster of terminal buds
    Stem Cross Section:
    Round
    Stem Form:
    Straight
    Stem Surface:
    Smooth (glabrous)
    Stem Description:
    Branches and larger twigs are light gray to medium gray and relatively smooth, while small twigs are pale brown and smooth with scattered white lenticels. Buds are ovoid, 1/4" long, sharp-pointed, with imbricate scales, and brown in color.
  • Landscape:
    Landscape Location:
    Coastal
    Naturalized Area
    Recreational Play Area
    Woodland
    Landscape Theme:
    Children's Garden
    Edible Garden
    Native Garden
    Rain Garden
    Design Feature:
    Shade Tree
    Street Tree
    Attracts:
    Butterflies
    Small Mammals
    Songbirds
    Resistance To Challenges:
    Deer
    Pollution
    Salt
    Wet Soil
  • Poisonous to Humans:
    Poison Severity:
    Low
    Poison Symptoms:
    Stomach pain, constipation and later bloody diarrhea, excessive thirst and urination.
    Poison Toxic Principle:
    Gallotannins, quercitrin, and quercitin.
    Causes Contact Dermatitis:
    No
    Poison Part:
    Leaves
    Seeds